1、Designation: C1732 14Standard Practice forInstallation of Concrete Floor Tiles1This standard is issued under the fixed designation C1732; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parent
2、heses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the installation of concrete floor tile(CFT) units for application as exterior and interior flooring.Units described by this pract
3、ice shall be manufactured to meetthe requirements of Specification C1731. This practice islimited to the installation of CFT units.1.2 This practice covers aspects of installation relating toperformance in service.1.3 UnitsThe values stated in inch-pound units are to beregarded as standard. The valu
4、es given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to esta
5、blish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C270 Specification for Mortar for Unit MasonryC920 Specification for Elastomeric Joint SealantsC979 Specification for Pigments for Integra
6、lly Colored Con-creteC1232 Terminology of MasonryC1325 Specification for Non-Asbestos Fiber-Mat Rein-forced Cementitious Backer UnitsC1384 Specification for Admixtures for Masonry MortarsC1714/C1714M Specification for Preblended Dry MortarMix for Unit MasonryC1731 Specification for Concrete Floor Ti
7、le2.2 ANSI Standard:ANSI A108 A118 American National Standards for the In-stallation of Ceramic Tile32.3 International Concrete Repair Institute Standard:ICRI Guideline No 310.2-1997 Selecting and SpecifyingConcrete Surface Preparation for Sealers, Coating, andPolymer Overlays42.4 The Masonry Societ
8、y Standard:TMS 602-13/ACI 530.1-13/ASCE 6-13 Specification forMasonry Structures53. Terminology3.1 Definitions:3.1.1 birdcage mixer attachment, nmixer attachment withopen paddles designed to prevent air entrainment.3.1.2 cementitious backer board, na fiber-reinforcedcement-based substrate sheet for
9、CFT installation.3.1.3 concrete floor tile (CFT), na manufactured masonryunit that is a blend of cementitious material, aggregates,pigments, chemical admixtures, and water formed into theappropriate shape and cured in order to be applied by way ofmasonry mortar to an approved substrate.3.1.4 membran
10、e, na coating applied to the substrate as aliquid or sheet and used to protect the CFT installation fromwater intrusion, substrate cracks, thermal expansion/contraction, cement shrinkage, and subfloor deflection.3.1.4.1 DiscussionMembranes include but are not limitedto anti-fracture, cleavage, crack
11、 isolation, uncoupling, andwaterproofing membranes.3.1.5 retemper, vto add water to mortar or grout to replacewater lost to evaporation.3.1.6 sealer, nwater- or petroleum-based material appliedas a liquid to provide protection from water, stains, andcontaminants.3.1.7 setting bed, nthe mortar subsur
12、face to which CFTunits are adhered.1This test method is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.05 on Masonry Assemblies.Current edition approved Dec. 15, 2014. Published January 2015. DOI: 10.1520/C1732-14.2For re
13、ferenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W.
14、43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available from International Concrete Repair Institute 10600 West HigginsRoad, Suite 607 Rosemont, IL 60018, http:/www.icri.org.5Available from The Masonry Society 105 South Sunset Street, Suite Q,Longmont, CO USA 80501-6172, http:/www.maso
15、nrysociety.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Significance and Use4.1 This practice is intended to provide technical informa-tion for designers, architects, and installers of CFT units inresidential and light comme
16、rcial construction. This practicedoes not address installation methods or techniques for floortile units manufactured from other materials.5. Materials5.1 Materials shall comply with the contract documents. Ifthe contract documents do not include materials or there are nocontract documents, then the
17、 materials in 5.2 through 5.8 shallbe used.5.2 Concrete Floor Tile (CFT)CFT units shall complywith the requirements of Specification C1731.5.3 Mortar:5.3.1 Mortar shall comply with one of the following re-quirements:5.3.1.1 Thin set mortar and medium bed mortar shallcomply with the requirements of A
18、NSI A118.4 and A118.11.5.3.1.2 Type N, S, or M mortar shall comply with therequirements of Specification C270.5.3.1.3 Preblended dry mortar shall comply with the re-quirements of Specification C1714/C1714M.5.3.2 Admixtures shall comply with Specification C1384.Chloride admixtures shall not be used w
19、ith colored concrete orgrout.5.4 Grout:5.4.1 Premixed sanded or unsanded grout shall comply withthe requirements of ANSI A118.6.5.4.2 Pigments used in grout shall comply with the require-ments of Specification C979.5.5 Membranes:5.5.1 All membranes shall meet applicable ASTM Interna-tional and ANSI
20、standards and be installed per the membranemanufacturers installation instructions.5.6 Sealer:5.6.1 Sealer material and installation shall meet applicableASTM International and ANSI standards and local environ-mental requirements.5.7 Cementitious Backer Boards:5.7.1 Cementitious backer boards shall
21、comply with Speci-fication C1325 and shall meet requirements of ANSI A118.9.5.8 Joint Sealants:5.8.1 Joint sealants shall comply with the requirements ofSpecification C920.6. Environmental Conditions6.1 Hot and Dry ConditionsWhen the environmentalconditions exceed 90F (32.2C), installation of mortar
22、 andgrout shall comply with the hot weather construction require-ments of local building code, the recommendations of CFTmanufacturer, or hot weather construction provisions of TMS602/ACI 530.1/ASCE 6, Article 1.8 D.6.2 Freezing or Low TemperaturesInstallations shall beprotected from temperatures be
23、low 40F (4.4C). When theenvironmental conditions are below 40F (4.4C), installationof mortar and grout shall comply with the cold weatherconstruction provisions of TMS 602/ACI 530.1/ASCE 6,Article 1.8 C.6.2.1 Protect CFT units from moisture. Units containingfrozen moisture, visible ice, or snow on a
24、ny surface shall not beinstalled.7. Substrate/Surface Preparation7.1 New or Existing Concrete Slab:7.1.1 Concrete surface profiles shall range from CSP 2 toCSP 5 as described in ICRI Guideline No 310.27.1.2 Light-broom-finished concrete slab surface is recom-mended. Troweled smooth finished surfaces
25、 shall be mechani-cally abraded by grinding or shot blasting or by other meansdesigned to provide an adequate bond.7.1.3 Allow the concrete slab to cure for a minimum of 28days or as otherwise specified to provide a dimensionally stablesubstrate for installation.7.1.4 Inspect the surface for paint,
26、dirt, sealer, or any otherforeign substances that may inhibit bonding and ensure thesurface is clean and free of loose or spalling material.7.1.5 If a membrane is specified, consult the membranemanufacturer for substrate requirements.7.2 Plywood Floor:7.2.1 Do not bond CFT directly to wood substrate
27、; preparesubstrate using one of three materials:7.2.1.1 Cementitious backer board.7.2.1.2 Cleavage or uncoupling membrane.7.2.1.3 Prefloated 114- to 2-in. (31.8- to 50-mm) mortar bedon a cleavage membrane shall meet requirements of ANSIA108.2. Mortar beds over 2 in. (50-mm) shall be installed perthe
28、 contract documents.7.3 Waterproofing and Crack Isolation Membranes:7.3.1 Waterproofing membranes are recommended for inte-rior installations and shall comply with ANSI A118.10.7.3.2 Crack isolation membranes are recommended forinterior and exterior installations and shall comply with ANSIA118.12.7.
29、4 Substrate shall be plumb or level, and true with maxi-mum variation from required plane to be18-in. (3.5 mm) in10-ft. (3.05 m).7.5 Movement joints shall meet the requirements of ANSIA108.01.8. Installation of CFT Units8.1 General InstallationThree installation options are pro-vided; CFT manufactur
30、ers recommendations shall be con-sulted for preferred method.8.1.1 Thin-set Mortar:8.1.1.1 The thin-set mortar bed thickness shall be no greaterthan316 in. (4.8 mm) thick or as specified.8.1.2 Standard Bed Mortar:8.1.2.1 Use premixed dry mortar that meets the require-ments of Specification C1714/C17
31、14M or mix in accordancewith C270.C1732 1428.1.2.2 The mortar bed thickness shall range from minimum12 in. (13 mm) thick to maximum 1-in. (25 mm) thickness oras specified.8.1.3 Medium Bed Mortar:8.1.3.1 The medium bed mortar bed thickness shall be nogreater than34 in. (19 mm) thick or as specified.N
32、OTE 1Medium-bed mortars use larger aggregate to allow for athicker setting bed than thin-set mortar and are designed for use with largeformat, heavy, or thick tiles.NOTE 2The TCNA Handbook currently defines large format tiles as 8in. by 8 in. and larger.8.2 The bonding surface of the CFT unit shall
33、be moistenedbefore installation. The surface shall appear damp but withoutfreestanding water. Units shall not be immersed or submergedin water before installation.8.3 Review and follow the instructions printed on each bagof packaged thin-set mortar, medium bed mortar, or premixeddry mortar.8.3.1 Mix
34、 mortar and clean cool water together by hand orwith a variable-speed electric drill at a slow speed (150 to 200rpm 16 to 21 rad/s) to a smooth, paste consistency.8.3.2 Use a birdcage mixer attachment rather than a paddlemixer attachment to avoid entraining air in the mix.8.3.3 Stir mortar with the
35、trowel to keep fluffy and do notretemper.8.4 Spread mortar onto the substrate using the flat edge of a12 in. (12.7-mm) square notched trowel or34-in. (19.1-mm)rounded notched trowel. Use the notched edge to form groovesin one direction under each CFT unit. When mortar is properlymixed, the troweled
36、ridges on the substrate should stand withlittle or no slump.8.5 Do not allow the mortar to “skin over” and loseplasticity before the CFT units are placed. Extreme air and slabtemperatures may affect the mortars setting time. Do notspread too much mortar at one time.8.6 Spread mortar uniformly on the
37、 back of each CFT unitusing the flat side of a trowel so that a minimum of 95 % of theback surface is covered.8.7 Place CFT units by moving them18 to14 in. (3.175 to6.35 mm) back and forth perpendicular to the ridges until theridges collapse and all the voids are filled.8.8 CFT units shall be cut wi
38、th a wet saw for best results.Wash pieces with clean water after cutting to avoid stainingfrom grit and debris.9. Grouting and Finishing Joints9.1 When grout joints are up to18 in. (3.2 mm) wide,nonsanded grout shall be used. When grout joints are18 to 112in. (3.2 to 38.1 mm) wide, sanded grout or m
39、ortar mixed inaccordance with Specification C270 should be used.9.2 A grout bag is recommended to fill all joints. If grout isfloated with a trowel, tiles shall be presealed to preventstaining.9.3 Completely fill each grout joint slightly higher than theCFT surface.9.4 Tool and finish joints as reco
40、mmended by the CFTmanufacturer.10. Cleaning10.1 Do not allow mortar and grout to set up on the surfaceof the CFT unit. Remove excess mortar and grout when it hassufficiently hardened but before final set.NOTE 3CFT units can be presealed to ease the removal of grout scumand haze.10.1.1 Do not use a w
41、et brush to treat mortar joints or cleanexcess mortar.10.1.2 Do not use a wire brush to clean excess mortar.10.1.3 Do not use muriatic acid to clean excess mortar orgrout; use acid-based products with caution.10.2 Consult the CFT manufacturer regarding cleaning witha pressure washer.11. Sealing11.1
42、Consult the CFT manufacturer for recommendations.Select the sealer appropriate for the location of installation,expected traffic, and appearance desired.11.2 Apply the sealer in accordance with the sealer manu-facturers installation recommendations.11.3 At a minimum, ensure the surface is clean and
43、drybefore sealing to avoid discoloration. Remove any residue andgrout haze before sealing.12. Keywords12.1 cementitious; concrete floor tile; flooring; grout; instal-lation; masonry; membrane; mortar; tileASTM International takes no position respecting the validity of any patent rights asserted in c
44、onnection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the resp
45、onsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive carefu
46、l consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International,
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